Is there a way to suppress logging for individual steps?

[kinook]

Yes, by checking the Disable logging of action output on the More tab of the Step Properties dialog.

Or by creating a temporary LOGFILE macro (to override the project/app level settings) and setting it to an empty string (to disable logging) or deleting (to re-enable logging) in a step's vbld_StepStarting script event. See the Logging.bld sample for more details.